Antlia 3nM compared with Baader 4nM narrowband filters. Comments on either. - Forums

Topic starter

Jul 28, 2023 · Edited: Jul 28, 2023

I currently useing Baader 6.5-8.5nM narrowband filters and I am thinking about going for something narrower but not too expensive. I would be interested on users experience of Antlia 3nM and Baader 4nM filters, particularly in Ha and OIII but also SII.
My scope is an 8", F5, 1000mm f.l. Newtonian so I am not interested in the fast scope filter versions.

Bray Falls

Jul 28, 2023

I use a set of 3nm antlias on my FSQ85, and they have performed well for me.

Well Written

JohnHen

Jul 28, 2023

Hi David,
I have both the UNB Baader CMOS and the Antlia Pro 3nm (on different refractor scopes both ~f/5-6). Had the Baader first and then got the Antlia to see if they are any different. And indeed, there is a difference: When I started imaging with the Antlia, I was surprised to see how little signal was visible a single sub (on a quite faint Ha source) as opposed to the Baader. But when I had collected/stacked many hours, it was apparent that the Antlia provided a higher contrast i.e more details (at the cost of larger integration time). This is my experience that is by no way a quantitative analysis and it is neither exhaustive etc. Both are good value for the money and you won't regret buying either. But if you look for extra detail (in some!) targets and are wiling to put extra integration time, then the Antlia may provide some more detail.
Hope that helps. CS, John

Helpful Insightful Respectful Supportive

Rob Lyons

Jul 29, 2023

I have 2 sets of the Antlia 3nm and think they are fantastic. The OIII is a huge step up from wider bandpass filters and the improved contrast overall by going narrower is well worth it. I upgraded from 7nm filters and the difference was rather dramatic. I have even shot 0III around the full moon and gotten amazing results.

Helpful Engaging Supportive

Chris McGrew

Jul 29, 2023

I love the Antlia 3nm. Great value for money, work great, very good halo control. I like them so much I have 2 full sets of LRGBHSO for my twin rigs, and shoot away no matter the moon phase. Most of the work on my page was done with Antlia filters.

Minh Lết

Jul 29, 2023

Antlia all the way. Baader's NB filters are trash. Extreme halo on bright stars.

TakFan

Jul 29, 2023 · Edited: Jul 29, 2023

UNB Baader Ha gave me halo while Antlia Ha works fine. All other Baader filters were absolutely OK. Baader refused Ha filter exchange and claimed halos are caused by the optics and not by their filter.

Optics TSA-120 with Tak reducer.

CS
Dirk

David Moore

Topic starter

Jul 29, 2023

Thanks everyone for your experiences. I often get haloes with my approx 7nM Baader SHO filters, different ones depending on which target I am imaging. I shall be getting Antlia, one at a time due to the cost.

Josh Jones

Jul 29, 2023

I also had baader for a while, but moved to astronomik maxfr and so much better. They work really well on fast optics as well.

Donna Harris

Jul 29, 2023

David Moore:
I currently useing Baader 6.5-8.5nM narrowband filters and I am thinking about going for something narrower but not too expensive. I would be interested on users experience of Antlia 3nM and Baader 4nM filters, particularly in Ha and OIII but also SII.
My scope is an 8", F5, 1000mm f.l. Newtonian so I am not interested in the fast scope filter versions.

I’m using the Antlia 4.5nm filters. This is my first monochrome camera experience but I am very happy with the results. I went with the 4.5 because they were less expensive than the 3nm but also because they require a little less exposure time. I’m using these with the ASI533MM with 1.25” filters (also a cost savings).

Well Written Concise

Robert Khoury

Jul 29, 2023

I get halos with my Antlia 3nm Oiii and smaller halos on my Sii. Ha works wonderfully. I'm not sure if it's quality control issue but they're there. I haven't tried shooting in full or anything higher than 50% moon yet. I do aim for 15 or more hours in total integration time and so far from my 4 images having made the switch to mono this year very happy with the results. Unfortunately no direct comparison to other filters vs my experience using a 12nm dual-band in OSC

Minh Lết

Jul 30, 2023

Robert Khoury:
I get halos with my Antlia 3nm Oiii and smaller halos on my Sii. Ha works wonderfully. I'm not sure if it's quality control issue but they're there. I haven't tried shooting in full or anything higher than 50% moon yet. I do aim for 15 or more hours in total integration time and so far from my 4 images having made the switch to mono this year very happy with the results. Unfortunately no direct comparison to other filters vs my experience using a 12nm dual-band in OSC

try flipping your filter. If that still does not work then the halp may comes from your optics or camera rather than the filter.

Robert Khoury

Jul 30, 2023

Minh Lết:
Robert Khoury:
I get halos with my Antlia 3nm Oiii and smaller halos on my Sii. Ha works wonderfully. I'm not sure if it's quality control issue but they're there. I haven't tried shooting in full or anything higher than 50% moon yet. I do aim for 15 or more hours in total integration time and so far from my 4 images having made the switch to mono this year very happy with the results. Unfortunately no direct comparison to other filters vs my experience using a 12nm dual-band in OSC

try flipping your filter. If that still does not work then the halp may comes from your optics or camera rather than the filter.

These are the threaded 2" ones so I would assume not on backwards. What issues with the scope or camera could be causing it? The camera is brand new

Minh Lết

Jul 30, 2023

Robert Khoury:
Minh Lết:
Robert Khoury:
I get halos with my Antlia 3nm Oiii and smaller halos on my Sii. Ha works wonderfully. I'm not sure if it's quality control issue but they're there. I haven't tried shooting in full or anything higher than 50% moon yet. I do aim for 15 or more hours in total integration time and so far from my 4 images having made the switch to mono this year very happy with the results. Unfortunately no direct comparison to other filters vs my experience using a 12nm dual-band in OSC

try flipping your filter. If that still does not work then the halp may comes from your optics or camera rather than the filter.

These are the threaded 2" ones so I would assume not on backwards. What issues with the scope or camera could be causing it? The camera is brand new

some camera have low quality chamber windows AR coating that could cause halo. Also the reducer/flattener without proper AR coating also may cause halo. My QHY294M had a slight halo with the antlia 3nm O3. But it's gone after switching to the 2600MM.
also the O3 is expected to have some halo around it. Even my Astrodons shows some halo around the Alnitak on O3.

Robert Khoury

Jul 30, 2023

Minh Lết:
Robert Khoury:
Minh Lết:
Robert Khoury:
I get halos with my Antlia 3nm Oiii and smaller halos on my Sii. Ha works wonderfully. I'm not sure if it's quality control issue but they're there. I haven't tried shooting in full or anything higher than 50% moon yet. I do aim for 15 or more hours in total integration time and so far from my 4 images having made the switch to mono this year very happy with the results. Unfortunately no direct comparison to other filters vs my experience using a 12nm dual-band in OSC

try flipping your filter. If that still does not work then the halp may comes from your optics or camera rather than the filter.

These are the threaded 2" ones so I would assume not on backwards. What issues with the scope or camera could be causing it? The camera is brand new

some camera have low quality chamber windows AR coating that could cause halo. Also the reducer/flattener without proper AR coating also may cause halo. My QHY294M had a slight halo with the antlia 3nm O3. But it's gone after switching to the 2600MM.
also the O3 is expected to have some halo around it. Even my Astrodons shows some halo around the Alnitak on O3.

*Interesting, thank you. Yeah I'm using the 2600mm as well with an Askar 500 so no FF or reducer. So far the halos have been easy to correct using clone stamp after star removal. I'll keep an eye on it though

Minh Lết

Jul 30, 2023

Robert Khoury:
Minh Lết:
Robert Khoury:
Minh Lết:
Robert Khoury:
I get halos with my Antlia 3nm Oiii and smaller halos on my Sii. Ha works wonderfully. I'm not sure if it's quality control issue but they're there. I haven't tried shooting in full or anything higher than 50% moon yet. I do aim for 15 or more hours in total integration time and so far from my 4 images having made the switch to mono this year very happy with the results. Unfortunately no direct comparison to other filters vs my experience using a 12nm dual-band in OSC

try flipping your filter. If that still does not work then the halp may comes from your optics or camera rather than the filter.

These are the threaded 2" ones so I would assume not on backwards. What issues with the scope or camera could be causing it? The camera is brand new

some camera have low quality chamber windows AR coating that could cause halo. Also the reducer/flattener without proper AR coating also may cause halo. My QHY294M had a slight halo with the antlia 3nm O3. But it's gone after switching to the 2600MM.
also the O3 is expected to have some halo around it. Even my Astrodons shows some halo around the Alnitak on O3.

*Interesting, thank you. Yeah I'm using the 2600mm as well with an Askar 500 so no FF or reducer. So far the halos have been easy to correct using clone stamp after star removal. I'll keep an eye on it though

The FRA500 has a 2 elements ff intergrated

Minh Lết

Jul 30, 2023

The halo, if caused by the ff tends to be really big.

Robert Khoury

Jul 30, 2023

Minh Lết:
The halo, if caused by the ff tends to be really big.

*ok I think optics should be ok. The one halo I had to deal with so far with my new mono setup was the bright star near the Tulip nebula. If I remember correctly diameter of 100 on clone stamp removed the halo after star removal quite nicely. So probably not too bad of an issue? I only had halo issues with two other images; horsehead and Ghost of Cassiopeia. Those were much larger rings (and expected to see them) but I was using a 12nm dual-band with a 2600mc.